#来定义用户登录表单
from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField,TextAreaField
from wtforms.validators import DataRequired, ValidationError,Email, EqualTo,Length

from app.models import User


class LoginForm(FlaskForm):
    username = StringField('Username',validators=[DataRequired()])
    password = PasswordField('Password',validators=[DataRequired()])
    remember_me = BooleanField("Remember Me")
    submit = SubmitField("Sign In")


class RegistrationForm(FlaskForm):
    username = StringField('Username',validators=[DataRequired()])
    email = StringField('Email',validators=[DataRequired(),Email()])
    password = PasswordField("Password",validators=[DataRequired()])
    password2 = PasswordField(
        "Repeate Password",validators=[DataRequired(),EqualTo('password')]
    )
    submit = SubmitField('Register')

    def validate_username(self,username):
        user = User.query.filter_by(username=username.data).first()
        if user is not None:
            raise ValidationError(" Please use a differ username")
    def validate_email(self,email):
        user = User.query.filter_by(email=email.data).first()
        if user is not None:
            raise ValidationError(" Please use a differ username")

class EditProfileForm(FlaskForm):
    username = StringField("Username",validators=[DataRequired()])
    about_me = TextAreaField("About me",validators=[Length(min=0,max=140)])
    submit = SubmitField('Submit')

    #修复用户重命名，提供验证
    """
    def __init__(self,original_username,*args,**kwargs):
        super(EditProfileForm,self).__init__(*args,**kwargs)
        self.original_name = original_username

    def validate_username(self,username):
        if username.data != self.original_name:
            user = User.query.filter_by(username=self.username.data).first()
            if user is not None:
                raise ValidationError("Please use a different username")
    """

class PostForm(FlaskForm):
    post = TextAreaField(
        "Say somrthings",validators=[DataRequired(),Length(min=1,max=140)]
    )
    submit = SubmitField("Submit")

class ResetPasswordRequestForm(FlaskForm):
    email = StringField('Email',validators=[DataRequired(),Email()])
    submit = SubmitField("Submit")

class ResetPasswordForm(FlaskForm):
    password = PasswordField('Password', validators=[DataRequired()])
    password2 = PasswordField(
        'Repeat Password', validators=[DataRequired(), EqualTo('password')])
    submit = SubmitField('Request Password Reset')